55983564458 has 4 divisors (see below), whose sum is σ = 83975346690. Its totient is φ = 27991782228.

The previous prime is 55983564449. The next prime is 55983564473. The reversal of 55983564458 is 85446538955.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 52165189609 + 3818374849 = 228397^2 + 61793^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 55983564458.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13995891113 + ... + 13995891116.

Almost surely, 2^55983564458 is an apocalyptic number.

55983564458 is a deficient number, since it is larger than the sum of its proper divisors (27991782232).

55983564458 is a wasteful number, since it uses less digits than its factorization.

55983564458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27991782231.

The product of its digits is 103680000, while the sum is 62.

The spelling of 55983564458 in words is "fifty-five billion, nine hundred eighty-three million, five hundred sixty-four thousand, four hundred fifty-eight".